this is an interesting website, tho it doesn't specifically list your speakers:
http://www.classicsansui.net/Speakers.htm
besed upon the drivers in yours, & the 60w max power rating (from sp1500's i have seen on ebay), i would suspect your speakers have somewhere in the low to mid 90db/1w/1m efficiency. my sp2500's, which i paid $25 for, are rated at 98db/1w/1m. i wrote a li'l blurb about 'em here:
http://audiokarma.org/forums/showthread.php?t=93549&highlight=sansui
re: mods, i would suspect that rebuilding the x-overs w/newer quality parts would result in a big improvement. i am considering doing so w/mine, even tho it will at least quadruple my investment in them. ;~)
doug s.
http://www.classicsansui.net/Speakers.htm
besed upon the drivers in yours, & the 60w max power rating (from sp1500's i have seen on ebay), i would suspect your speakers have somewhere in the low to mid 90db/1w/1m efficiency. my sp2500's, which i paid $25 for, are rated at 98db/1w/1m. i wrote a li'l blurb about 'em here:
http://audiokarma.org/forums/showthread.php?t=93549&highlight=sansui
re: mods, i would suspect that rebuilding the x-overs w/newer quality parts would result in a big improvement. i am considering doing so w/mine, even tho it will at least quadruple my investment in them. ;~)
doug s.